This study obtains the analytical inverse system of a permanent magnet synchronous motor (PMSM) model based on traditional magnetic field orientation decoupling control mode by analyzing quality PMSM. Using neural network’s excellent approximation ability and well learning functions, network (NNIS) was established identifying offline training back propagation (BPNN) radial basis function (RBFNN...

Permanent Magnet Synchronous Motors (PMSMs) have been widely used in many industrial applications. In This paper a new method for multi objective optimal design of a permanent magnet synchronous motor (PMSMs) with surface mounted permanent magnet rotor is presented to achieve maximum efficiency and power density using a Bees algorithm for industrial applications. The objective function is a...

Magnet Pole Design CANDLE booster synchrotron magnetic lattice contains 48 dipoles of H-shape. Detailed magnetic and mechanical design of those magnets is performed within the framework of the project. In this report, the design considerations of the dipole magnet, including the magnetic field simulation is presented. The results of the numerical simulation are compared with the magnetic field ...

Abstract. Capsule endoscopy is a promising diagnostic tool for the entire gastrointestinal tract. Since patient swallows capsules, their size must be sufficiently small. The principal built-in components are cameras, silver-oxide batteries, light emitting diodes, and an antenna transmitting video. For diagnosis treatment, precise localization of capsules specific video frames required. Recently...

Although no effects of permanent magnets on resting skin blood flow (SBF) in humans have yet been demonstrated, the possibility that magnet related effects might modify dynamic SBF changes has not been previously studied. We hypothesized that magnets may alter local neurovascular mechanisms to cause changes in normal SBF vasoactive responses. To test this, we studied the effects of a magnet on ...

This paper focuses on the control of permanent magnet synchronous motors (PMSMs) utilizing a non-linear adaptive PI-Backstepping design and model harmonics reduction approach that uses an active shunt filter followed by cascade bandpass filter. While conventional backstepping may assure system's stability, it is often imprecise. It creates significant amount static error, which has detrimental ...

Many magnetic materials have quantum disordered ground states, but it is not always clear what drives them. Here, the authors study pyrochlore magnet Nd${}_{2}$ScNbO${}_{7}$ using neutron diffraction, heat capacity, and neutron-sampled nuclear hyperfine excitations. The static moments inferred from these three techniques are inconsistent, pointing to some fraction of spins remaining dynamic low...

Most contemporary demand pacemakers contain a magnetic reed switch easily actuated by the application of an external magnet over the pulse generator. This report describes the unusual response of two implanted pulse generators to the testing magnet. The magnetic reed switch of one pulse generator was found to 'stick' in the open position making it impossible to revert the pulse generator to its...

Permanent magnet synchronous machines are known as a good candidate for hybrid electric vehicles due to their unique merits. However they have two major drawbacks i.e. high cost and small speed range. In this paper an optimal design of a permanent magnet machine is presented. A reduction of permanent magnet material for a constant torque and an extension in speed and torque ranges are chosen as...

INTRODUCTION Magnet ingestion usually does not cause serious complications, but in case of multiple magnet ingestion or ingestion of magnet with other metal it could cause intestinal obstruction, fistula formation or even perforation. CASE REPORT We report case of intestinal obstruction and fistula formation following ingestion of 25 magnets in a 2-year-old girl. Intraoperatively omega shaped...